Under Leopard, 10.5.11 I am "plagued' with constant messages about the PubSubAgent..... I have never seen anything so common or pervasive on any earlier OS X version. Even whilst watching a QuickTime movie, I get these messages appearing on the screen. I can find nothing in any Forums or anywhere on the Apple Support pages that helps me identify or fix this issue. Does anyone on the List have an explanation of the origin of these messages, or more importantly, how to fix it? regards, Trevor PS: Merry Christmas and Happy New Year to all List members.....